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@article{MASLO_1981__31_2_a8, author = {Pulmannov\'a, Sylvia}, title = {A note on the extensibility of states}, journal = {Mathematica slovaca}, pages = {177--181}, publisher = {mathdoc}, volume = {31}, number = {2}, year = {1981}, mrnumber = {611630}, zbl = {0469.03044}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1981__31_2_a8/} }
Pulmannová, Sylvia. A note on the extensibility of states. Mathematica slovaca, Tome 31 (1981) no. 2, pp. 177-181. http://geodesic.mathdoc.fr/item/MASLO_1981__31_2_a8/